Hybrid OLED-Electrophoretic Display Substrate for Full Screen Integration
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Solution Overview
Problem
Current OLED display technologies face challenges in achieving a full screen display while ensuring the normal operation of hardware like cameras, as opening regions for hardware integration compromise display functionality and increase manufacturing costs.
Innovation Solution
Integration of OLED and electrophoretic display (EPD) technologies on a single substrate, where electrophoretic units can switch between display and transparent states, allowing for a full screen display while maintaining hardware functionality by sharing gate and data lines and using thin film transistors for active matrix driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If opening regions are created for hardware integration, then hardware functionality is enabled, but display functionality is compromised and manufacturing costs increase
Solution Approach 1:
The patent applies the dynamics principle by using electrophoretic display units that can dynamically switch between transparent and display states. This allows the same region to serve different functions at different times: transparent state for hardware access (camera) and display state for full screen display, eliminating the need for permanent opening regions that compromise display functionality.
Solution Approach 2:
The patent implements multi-functionality by integrating both OLED emitting units and electrophoretic display units on the same substrate. The electrophoretic units can function as either transparent regions for hardware integration or as display regions, allowing a single structure to serve multiple purposes and eliminating the need for separate opening regions.
2Adaptability or versatility
If opening regions are created for hardware integration, then hardware functionality is enabled, but manufacturing complexity and costs increase
Solution Approach 1:
The patent merges the hardware integration function and display function into a single integrated structure. By combining OLED emitting units and electrophoretic display units on the same substrate with shared gate and data lines, the patent eliminates the need for separate opening regions and reduces manufacturing complexity while enabling hardware functionality.
Solution Approach 2:
The electrophoretic display units serve as universal elements that can dynamically switch between transparent and display states, allowing the same structural elements to serve both hardware integration and display functions, thereby reducing overall device complexity and manufacturing costs.
3Area of stationary object
If electrophoretic units are integrated with OLED units, then full screen display is achieved, but device structure becomes more complex
Solution Approach 1:
The patent combines OLED emitting units and electrophoretic display units on the same substrate, merging their structural elements including gate electrodes, data lines, and pixel defining layers. This integration achieves full screen display coverage while managing structure complexity through shared components rather than completely separate systems.
Solution Approach 2:
The patent applies local quality by using different display technologies (OLED and electrophoretic) in different regions of the same substrate. Each region maintains its specific functional characteristics while contributing to the overall full screen display, allowing optimized performance in each area without requiring complete structural redesign.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integration enables a truly full screen display while ensuring the normal operation of hardware like cameras, reducing design complexity and manufacturing costs, and improving encapsulation effectiveness.
Implementation Method 1
the plurality of electrophoretic units are configured to realize switch between a display state and a transparent state
Data Source
AI summary
Provided are a display substrate and a preparation method thereof, and a display apparatus. The display substrate includes a first display region and a second display region within the first display region, wherein the first display region includes a plurality of emitting units, and the second display region includes a plurality of electrophoretic units, the plurality of emitting units are configured to realize display, and the plurality of electrophoretic units are configured to realize switch between a display state and a transparent state.